Exhaust trap



Nov. 4 4- A. J. CULP EXHAUST TRAP Filed Oct. 25. 1923 Patented Nov. 4, 1924.

rArsnr orrica.

ARTHUR J. com, or cLAiN'ron, ALABAMA.

nxnAns'r TRAP.

Application filed October 25, 1923. Serial No. 670,745.

a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention provides a trap to mufile the exhaust of a gas engine and shrink the same so as to create a vacuum to make a forward pull on the piston when the exhaust port opens.

A further purpose of the. invention is the provision of eflicient means for the smoke stack of a locomotive engine to catch and control the soot and cinders and deaden the sound of the hea exhaust.

The invention a so aims to provide means for stove flues,- chimneys and smoke stacks to. be applied to the top thereof as a protection against fire and to catch and control the soot, cinders and sparks.

Other'objects and advantages will be apparent and suggest themselves as the nature of the invention is'understood.

While the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet difierent conditions and requirements, various changes in the form, proportion and minor details 5 of construction may beresorted to without departing from the nature of the invention.

Referring to the accompanying drawings forming a part of the application:

' Figure 1 is a vertical central sectional view of an exhaust trap embodying the invention,

Figure 2 is a horizontal sectional View on the line 2'2 of Figure 1, and

Figure 5 is a view. of the check valve as seen from the bottom side.

Corresponding and like parts are'referred to in the following description and designated in the several views of the drawings by like reference characters.

The device comprises similar headers 1 and 2 and a plurality of cooperating tubes. The headers 1 and 2 are hollow andof semispherical form, the fiat sides having openings formed therein to register with cooperating tubes' The center portion of the flat side of the header 1 is closed, as indicatedat 3, and the outer portion is provided with a'plurality of openings 4. The center portion of the flat side of the header 2-is formed with an opening 5 and its outer portion is provided with openings 6 to correspond with the openings 4 in the flat side of the header 1. Tubes 7 connect the openings 4 and 6 of the headers 1 and 2. A centrally disposed tube 8 is clamped between the flat sides of the headers 1 and 2 and is closed at its upper end by the solid portion 3 of the header 1 and its lower end is in register with the opening 5 of the header 2. Annular centering flanges 9 are formed upon the opposingsides of the headers 1 and 2 to receive the ends of the several tubes to retain them in place and insure a close joint.

Each of theheaders. has outer flanges 10 in which are formed openings to receive tie bolts 11 whereby the headers are connected and thetubesclamped therebetween- The space 12 of the header 1 constitutes a vacuum chamber and the space 13 of the header 2..

a trap to catch soot, cinders and sparks.

A tube 14 connects centrally with the semispherical shell of the header 2 and passes through the space 13, opening 5 and center tube 8 andterminates a short distance from the flat side of the header 1. The tube 14 is of less diameter than the tube 8 and is spaced therefrom. The exhaust, smoke and the like is supplied to the lower end of the g tube 14. F

A blow-off pipe 15 connects with the header 2 and is provided with a lever gate valve 16 which may be operated from a convenient point by means of a cord, not shown, or other connection, whereby soot,-

cinders or other accumulation may be blownfrom the chamber 13 between stations with out requiring stopping of the train. A check valve is provided centrally of the semispherical shell of the header 1 and comprises a casing including a lower semispherical portion 16 and an upper constricted portion 17 terminating in a collar 18,

A valve member 19 is located within the semispherical portion 16 of the casing and preferably consists of a disk ofaluminum bent into-concavo-conyex form to obtam a snug seat upon the inner lower; side of the casing. .A nipple 20 connects the valve casing with the header 1 and may constitute a part of either or be separate therefrom. A

combined guide and stop 21 pendent from the valve member 19 extends through the nipple 20 and coacts' with a ring 22 within the nipple 20 to give proper direction to the valve in its seating and unseating. The member 21 consists of a plurality of elements grouped about a central line and having their lower ends outwardly deflected to engage the lower end of the nipple 20 and limit the unseating of the valve.

The device is adapted to be coupled to a stack, pipe or other part by means of the tube 14 and the exhaust may discharge directly from the outlet of the checkvalve or through a pipe which may be coupled to the collar 18 thereof. The several tubes 7, 8 and 14 are preferably of sheet metal, whereby to cool the exhaust, smoke or the like passing therethrough, whereby to create a vacuum within the device which exerts a pull on the piston when the exhaust port opens.

In applying or adapting the trap to a gas engine with more than one cvlinder, it is necessary to provide a trap for each cylinder and conduct the exhaust therefrom to the trap whereby to provide for the vac uum to operate in the manner stated.

What is claimed is:

1. A device of the character specified, comprising spaced headers, each header having corresponding openings in its outer portion and one header having its central portion solid and the opposite header having an opening in its central portion, tubes connecting the outer openings of theheaders,

a central tube closed at one end by a header and in communication at its opposite end with the central opening of the opposite header, a tube connected with the last mentioned header and extending through the opening thereof and into the central tube and terminating a short distance from the closed end thereof, and a check valve applied to the header serving to close the end of the center tube.

opening thereof and 2. A device of the character specified, r

comprising spaced headers, each header having corresponding openings in its outer portion and one header having its central portion solid and the opposite header having an opening in its central portion, tubes connecting the outer openings of the headers, a central tube closed at one end by a header and in communication at its opposite end with the central opening of the opposite header, a tube connected with the last mentioned-header and e tending through the into the central tube and terminating a short distance from the closed end thereof, and a check valve applied to the header serving to close the end of the center tube, said check valve compris-.

ing a casing including a semispherical portlon and a cooperatmg valve member having its seating face convex to close against the inner side of the semispherical portion of the casing, and combined guide and stop means cooperating with the valve member.

3. A device of the. character specified, comprisingsimilar semispherical headers having corresponding 0 enings in the outer portion of their flat si es, one header having the center portion of its fiat side solid and the other header having an opening in the center of its flat side, a center tube closed at one end by the header and in communication at its opposite end with the other header, a tube connected to the latter and extending into the center tube and terminating a short distance from its closed end,

means connecting the headers and clamping the tubes therebetwcen, a check valve ap plied to the vacuum header, and a blow-ofli' pipe applied to the trap header.

In testimony whereofI aifix my signature in presence of two witnesses.

ARTHUR J. CULP. Witnesses:

J. W. FRANKLIN, C. 0. Jonas. 

